Why do glycolipids exist almost exclusively on the exterior side, but not on the cytoplasmic side of the cell membrane?Flippase move the glycolipids to this side of the membrane.The inner layer of the membrane is not thick enough to accommodate carbohydrates.Carbohydrates are only added to lipids on the lumen side of the ER and Golgi membranes.Carbohydrates are removed from the cytoplasmic side by glycosylase enzymes.Next

Lipids are not polymers. The simplest form of lipid is fatty acids which are a long chain of…

Answered: exist almost exclusively on the…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Which of these can never cross the lipid bilayer without the help of a transporter or a channel? O CO2 O 02 O water O Na+ O all of the above can diffuse through the lipid bilayer without transporter proteins or channels
6) Pore-forming toxins are a class of protein-based toxic polymers that result in the formation of large multi-protein channels that allow the free flow of substrates and liquid in and out of a cell or organelle. Research shows that these can attach to the outer mitochondrial membrane, or on the thylakoid membranes Hollyal of chloroplasts. Meman Extracelular binding space Proteiniciati Inactive soluble T obare Lipid Activation Active P Assembly Membrane tion Pelit K Partially formed pome Nunta Inson Large molecule A Protein What would the possible consequences be if this pore-forming toxin attached to the mitochondrial outer membrane or the thylakoid membrane? Explain why. ATP Nature Reviews Microbiology
The plasma membrane has a hydrophobic interior due to the two present in each phospholipid found in the phospholipid bilayer of the cell membrane. The plasma membrane allows some molecules to cross but not all. Therefore, the plasma membrane is said to be Molecules that are nonpolar and hydrophobic will cross the membrane with ease by Does this process require energy? When molecules move across the plasma membrane by passive transport, they will move down or with the_ from an area of concentration to an area of. concentration. Polar, hydrophilic molecules and charged ions will move across the plasma membrane by the process of_ This does not require energy, but it does require a A special case of diffusion is known as which is the movement of water across the plasma membrane. If a cell is placed into a solution that is hypertonic compared to the inside of the cell, the cell would If a cell is placed into a hypotonic solution compared to the inside of the cell, the cell water. would…
Choose the Incorrect statement. In the phospholipid bilayer part of the cell membrane. None of the statement are false Cholesterol is one of the major constituents Zwitterionic phospholipid are approximately equally distributed between inner and outer monolayers Negatively charged phospholipids are located in the inner monolayer facing cytoplasm Glycosylated lipids are located in the outer monolayer facing other cells
Cholesterol maintains the fluidity and stability of membranes at different temperatures. Cholesterol, therefore, ensures that the lipid bilayer Is always packed firmly Always has sugar molecules Is always moving Is destroyed
Which of these general statements is TRUE about the lipid called phosphatidylcholine (or PC)? Group of answer choices PC is NOT an aminophospholipid. PC is zwitterionic at normal cell pH. PC resides mainly in the outer leaflet of the membrane bilayer. 3 of these 4 responses are correct PC is a type of cholesterol.

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